Your company has suffered several denial-of-service attacks involving Microsoft Outlook e-mail
clients. How can you protect your systems from such attacks in the future, yet still allow client
users to accomplish their jobs?

A.
Filter out all attachments from e-mail messages at the e-mail server.

B.
Install personal firewalls on the e-mail server and on each client.

C.
Install antivirus applications on the clients and the e-mail server.

D.
Filter out all attachments from e-mail messages at the e-mail server, and install antivirus
applications on the clients.